TY  - BOOK
AU  - Kenn, Thomas M.
CN  - QE75
CN  - QE75
CN  - QE673
CY  - Washington,
DA  - 1973.
ID  - 3430
KW  - Geology, Stratigraphic
KW  - Geology, Stratigraphic
PB  - U.S. Govt. Print. Off.,
PP  - Washington,
PY  - 1973.
T1  - Sturgis Formation (Upper Pennsylvanian),a new map unit in the western Kentucky coal field,
TI  - Sturgis Formation (Upper Pennsylvanian),a new map unit in the western Kentucky coal field,
ER  -